Precision non-Hg thermometer
Ridgewood, N.Y. -PreformaTherm thermometer's STB blue liquid is said to be safer than both mercury and most traditional spirit thermometer liquids. The proprietary formula is biodegradable, nontoxic, noncaustic, and nonhazardous. The device meets all ASTM standards for accuracy, tolerance, and uncertainty. All thermometers are certified at five points in the manufacturer's ISO/IEC Guide 25 accredited laboratory. They are available in protective leatherette cases, both individually and in sets, in either Celsius or Fahrenheit.
Miller & Weber Inc.